3Operation
SECTION 3 – OPERATION
3.1 – Measuring Temperature
Before starting to measure temperature, make sure the following check list is met:
The Power and output connections are made (Fig
The target is larger than the optical field of view of the transmitter (Fig
Use the Laser Sighting accessory (Optional), to align the transmitter to the center of the target area.
The Emissivity is fixed at 0.95. No adjustment is necessary. If the target Emissivity is less than 0.95, you can place a masking tape or paint the target area with flat black paint to raise the surface Emissivity to 0.95.
Make sure the output load is within the product specification.
SPOT DIA.* (IN)
DISTANCE: SENSOR TO OBJECT (IN)
0" | 6" | 12" | 24" | 36" | 48" |
6.0" 8.0"
4.0"
2.0"
1.0"
0.4"@0"
D:S=6:1
SPOT DIA.* (CM)
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0 | 20 | 40 | 60 | 80 | 100 | 122 | ||||||
DISTANCE: SENSOR TO OBJECT (CM) * SPOT DIAMETER MEASURED AT 90% ENERGY
Figure 3-1. Optical Field of View
3.2 – Ambient Temperature
The transmitter can operate in an ambient temperature of 0 to 70°C (32 to 158°F) without any water cool jacket. It can operate from 0 to 200°C (32 to 392°F) with the water cool jacket accessory,
There is a warm up period of 1 to 2 minutes after power up. After the warm up period, temperature measurement can be made.
When the ambient temperature around the transmitter changes abruptly, the sensor head goes through a thermal shock. It takes a certain amount of time for the sensor head to get stabilized to the new ambient temperature. For example, it takes about 30 minutes for the transmitter to stabilize from 25°C to 50°C ambient temperature.
3
